Hello Cycling app is not compatible with OS under Android 11 and iOS 17 Fornevermore

I tried to update Hello Cycling app, and it said 'Your device is not compatible with the app anymore.'

I searched and found announcement by OpenStreet, developer of Hello Cycling app.

It said 'End of Support for OS under iOS17 and Android 11.'

I looked at my Android version, and it was 'Android 10'. I started searching for new smartphone, but the price was expensive.

But I found smartphone rental service by Rentio. It was around 2,000JPY (20USD) monthly!